effect of 685 upgrade on gas mileage? - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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post #1 of 8 Old 07-30-2009, 11:20 AM Thread Starter
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Location: Jefferson City, Missouri
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effect of 685 upgrade on gas mileage?

I bought my KLR because it is very versatile and and cheap to ride. For $2900 dollars purchase price and $7.00 a month for insurance I have fun and effective transportation in my 2007 KLR 650.

My gas mileage is about 48 mpg and I have no upgrades. I wish the bike had a little more snap and would run lower rpm's at highway miles. My question is what can I do to give it a little more pep without negatively affecting gas mileage.

I have ordered a new Vance Hines XCR muffler and jet kit for the carberetor (stage 1 or 2?). I have considered a 685 or 704 upgrade but an concerned it will negatively impact gas mileage. I have two kids in college and need to use my resources efffectively. Any suggestions?
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post #2 of 8 Old 07-30-2009, 06:13 PM
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Location: Paso Robles, CA.
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The 685 is the best bang for the buck power mod there is for the KLR and it has minimal affect on MPG's under normal riding conditions.
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post #3 of 8 Old 07-30-2009, 06:43 PM
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I ran my 685 with stock jetting and mild pipe mods. For my riding style the MPG's stayed the same as before..42 MPG. The 685 had better grunt for the 16T front sprocket.

I say go for it!!

Originally Posted by Swish~Married View Post
Larryboy, you're brilliant!!

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post #4 of 8 Old 07-31-2009, 09:29 PM Thread Starter
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Thanks for the input. The kawasaki dealership says they need between 5 and 12 hours for the job at $70 an hour. Ouch!!
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post #5 of 8 Old 08-31-2009, 06:37 PM
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IF money is really an issue, then I'd leave it stock. The bike does everything you need it to do as it sits. It's not really designed to be a rocket, just reliable, versatile, enjoyable transportation.

Last edited by bfaith; 08-31-2009 at 06:40 PM.
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post #6 of 8 Old 09-01-2009, 03:39 PM
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Location: Wasilla, Alaska
Posts: 507
I've added a lot of bling to my KLR but haven't paid much attention to performance mods. I knew when I bought it in 06 that it would not gas wheelie in second and I had owned enough machines that would. I just use it as secondary transportation and don't have a problem with how it runs. Good luck with the mods and I hope they provide noticeable improvement in the bike.

Spinning / flashing LED tail light;Dished seat;Nerf Bars;Panniers and rack;Aluminum skid pan;Master cylinder guard;tall shield;Heated gel grips;Acerbis Rally Pro guards with spoilers;Superbike low front fender;Doo upgrade;16T counter sprocket; K&N filter and box mod;GPS mount;Dash with voltage meter & clock;1" raising links;T bypass mod;anti vibe bars;anti vibe mirror mounts;Euro light switch; Aluminum choke leaver;new dry cell Super battery;Mefo Expolere's;New bearings and races
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post #7 of 8 Old 09-02-2009, 12:12 AM
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Location: Evansville, Indiana
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I'm known for saying the KLR isn't a speed demon and a little sluggish, but in all honesty it can be ridden quite aggressively in stock form. The engine can easily out perform the size of the bike and make for a spirited ride. You just have to keep it up around 5 and 6g's and it'll feel like a torque monster. You can take off quite fast and let her rip all the way close to redline and it doesn't really quit pulling. I think this is one of the better features of the KLR. Unlike a high powered bike, that gets you in trouble without even trying or paying attention and at the blink of an eye, you have to really be trying with the KLR which means your ready and paying attention. It's a built in safety feature I think.
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post #8 of 8 Old 09-02-2009, 11:12 AM
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Location: Benicia, CA
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Well said. I made a similar argument to a friend who is in the market. The KLR is more than fast enough when I want it to be. Having to try and go fast is much better than going faster than you want by accident.

I blast sport bikes off the line every day on my commute (granted most of them are 19 year old squids who don't know what their bikes can do, but I digress). Then I let them pass me once I hit the speed limit. Get some strange looks.

AND, as has been mentioned before, I really enjoy getting up to speed going through the gears. I don't want a bike that goes 35 in first. If I did, I would just get another scooter. Shifting keeps you alert and tuned in too.

"In a car you're always in a compartment, and because you're used to it you don't realize that through that car window everything you see is just more TV." R. Pirsig

PPMC #1.
Soon, we ride.

AKA JD Mader or you can call me "Dan" just not early for dinner.

Click my handle for a link to my homepage/blog...which has nothing to do with MCs. Free literature and music! Viva La Revolucion!
2008 KLR 650
RIP DM - Soon, we ride.
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